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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
Access to Cluster WBD CEFs
Cluster-Rumba Wideband Data (WBD) Plasma Wave Receiver/High Time Resolution Waveform Data
var authors='Pickett, Jolene, S.; Gurnett, Donald, A.';
document.write(authors);
(2023).
Cluster-Rumba Wideband Data (WBD) Plasma Wave Receiver/High Time Resolution Waveform Data.
[Data set].
Space Physics Data Facility; European Space Astronomy Centre.
https://doi.org/10.48322/7jw6-ks09. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/Cluster-Rumba/WBD/PT0.0000046S
Description
The following description applies to the Wideband Data (WBD) Plasma Wave Receivers on all four Cluster satellites, each satellite being uniquely identified by its number (1 through 4) or its given name (Rumba, Salsa, Samba, Tango, respectively). High time resolution calibrated waveform data sampled in one of 3 frequency bands in the range 0-577 kHz along one axis using either an electric field antenna or a magnetic search coil sensor. The dataset also includes instrument mode, data quality and the angles required to orient the measurement with respect to the magnetic field and to the GSE coordinate system. The AC electric field data are obtained by using one of the two 88m spin plane electric field antennas of the EFW (Electric Fields and Waves) instrument as a sensor. The AC magnetic field data are obtained by using one of the two search coil magnetometers (one in the spin plane, the other along the spin axis) of the STAFF (Spatio-Temporal Analysis of Field Fluctuations) instrument as a sensor. The WBD data are obtained in one of three filter bandwidth modes: (1) 9.5 kHz, (2) 19 kHz, or (3) 77 kHz. The minimum frequency of each of these three frequency bands can be shifted up (converted) from the default 0 kHz base frequency by 125.454, 250.908 or 501.816 kHz. The time resolution of the data shown in the plots is determined from the WBD instrument mode. The highest time resolution data (generally the 77 kHz bandwidth mode) are sampled at 4.6 microseconds in the time domain (~4.7 milliseconds in the frequency domain using a standard 1024 point FFT). The lowest time resolution data (generally the 9.5 kHz bandwidth mode) are sampled at 36.5 microseconds in the time domain (~37.3 milliseconds in the frequency domain using a standard 1024 point FFT). The availability of these files depends on times of DSN and Panska Ves ground station telemetry downlinks. A list of the status of the WBD instrument on each spacecraft, the telemetry time spans, operating modes and other details are available under Science Data Availability on the University of Iowa Cluster WBD web site at http://www- pw.physics.uiowa.edu/cluster/ and through the documentation section of the Cluster Science Archive (CSA) (https://www.cosmos.esa.int/web/csa/documentation). Details on Cluster WBD Interpretation Issues and Caveats can be found at http://www- pw.physics.uiowa.edu/cluster/ by clicking on the links next to the Caution symbol in the listing on the left side of the web site. These documents are also available from the Documentation section of the CSA website. For further details on the Cluster WBD data products see Pickett, J.S., et al., "Cluster Wideband Data Products in the Cluster Active Archive" in The Cluster Active Archive, 2010, Springer-Verlag, pp 169-183, and the Cluster WBD User Guide archived at the CSA website in the Documentation section. ... CALIBRATION: ... The procedure used in computing the calibrated Electric Field and Magnetic Field values found in this file can be obtained from the Cluster WBD Calibration Report archived at the CSA website in the Documentation section. Because the calibration was applied in the time domain using simple equations the raw counts actually measured by the WBD instrument can be obtained by using these equations and solving for 'Raw Counts', keeping in mind that this number is an Integer ranging from 0 to 255. Since DC offset is a real number, the resultant when solving for raw counts will need to be converted to the nearest whole number. A sample IDL routine for reverse calibrating to obtain 'Raw Counts' is provided in the WBD Calibration Report archived at the CSA. ... CONVERSION TO FREQUENCY DOMAIN: ... In order to convert the WBD data to the frequency domain via an FFT, the following steps need to be carried out: 1) If Electric Field, first divide calibrated data values by 1000 to get V/m; 2) Apply window of preference, if any (such as Hann, etc.); 3) Divide data values by sqrt(2) to get back to the rms domain; 4) perform FFT (see Bandwidth variable notes for non-continuous modes and/or the WBD User Guide archived at the CSA); 5) divide by the noise bandwidth, which is equal to the sampling frequency divided by the FFT size (see table below for appropriate sampling frequency); 6) multiply by the appropriate constant for the window used, if any. These steps are more fully explained in the WBD Calibration Report archived at the CSA.... +--------------------------+ Bandwidth Sample Rate ----------- -------------- 9.5 kHz 27.443 kHz 19 kHz 54.886 kHz 77 kHz 219.544 kHz +--------------------------+ COORDINATE SYSTEM USED: ... One axis measurements made in the Antenna Coordinate System, i.e., if electric field measurement, it will either be Ey or Ez, both of which are in the spin plane of the spacecraft, and if magnetic field measurement, it will either be Bx, along the spin axis, or By, in spin plane. The user of WBD data should refer to the WBD User Guide, archived at the CSA, Section 5.4.1 and Figure 5.3 for a description of the three orientation angles provided in these files. Since WBD measurements are made along one axis only, these three angles provide the only means for orienting the WBD measurements with respect to a geocentric coordinate system and to the magnetic field direction ...
Metadata Rights
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Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/Cluster-Rumba/WBD/PT0.0000046S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Cluster-Rumba Wideband Data (WBD) Plasma Wave Receiver/High Time Resolution Waveform Data
AlternateName
Cluster Rumba Wideband Data Plasma Wave Receiver/High Time Resolution Waveform Data
AlternateName
C1_CE_Waveform_WBD_CDF
AlternateName
C1_CP_Waveform_WBD
DOI
https://doi.org/10.48322/7jw6-ks09
ReleaseDate
2025-12-04 13:29:02Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-02 15:11:47Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:29:02Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
The following description applies to the Wideband Data (WBD) Plasma Wave Receivers on all four Cluster satellites, each satellite being uniquely identified by its number (1 through 4) or its given name (Rumba, Salsa, Samba, Tango, respectively). High time resolution calibrated waveform data sampled in one of 3 frequency bands in the range 0-577 kHz along one axis using either an electric field antenna or a magnetic search coil sensor. The dataset also includes instrument mode, data quality and the angles required to orient the measurement with respect to the magnetic field and to the GSE coordinate system. The AC electric field data are obtained by using one of the two 88m spin plane electric field antennas of the EFW (Electric Fields and Waves) instrument as a sensor. The AC magnetic field data are obtained by using one of the two search coil magnetometers (one in the spin plane, the other along the spin axis) of the STAFF (Spatio-Temporal Analysis of Field Fluctuations) instrument as a sensor. The WBD data are obtained in one of three filter bandwidth modes: (1) 9.5 kHz, (2) 19 kHz, or (3) 77 kHz. The minimum frequency of each of these three frequency bands can be shifted up (converted) from the default 0 kHz base frequency by 125.454, 250.908 or 501.816 kHz. The time resolution of the data shown in the plots is determined from the WBD instrument mode. The highest time resolution data (generally the 77 kHz bandwidth mode) are sampled at 4.6 microseconds in the time domain (~4.7 milliseconds in the frequency domain using a standard 1024 point FFT). The lowest time resolution data (generally the 9.5 kHz bandwidth mode) are sampled at 36.5 microseconds in the time domain (~37.3 milliseconds in the frequency domain using a standard 1024 point FFT). The availability of these files depends on times of DSN and Panska Ves ground station telemetry downlinks. A list of the status of the WBD instrument on each spacecraft, the telemetry time spans, operating modes and other details are available under Science Data Availability on the University of Iowa Cluster WBD web site at http://www- pw.physics.uiowa.edu/cluster/ and through the documentation section of the Cluster Science Archive (CSA) (https://www.cosmos.esa.int/web/csa/documentation). Details on Cluster WBD Interpretation Issues and Caveats can be found at http://www- pw.physics.uiowa.edu/cluster/ by clicking on the links next to the Caution symbol in the listing on the left side of the web site. These documents are also available from the Documentation section of the CSA website. For further details on the Cluster WBD data products see Pickett, J.S., et al., "Cluster Wideband Data Products in the Cluster Active Archive" in The Cluster Active Archive, 2010, Springer-Verlag, pp 169-183, and the Cluster WBD User Guide archived at the CSA website in the Documentation section. ... CALIBRATION: ... The procedure used in computing the calibrated Electric Field and Magnetic Field values found in this file can be obtained from the Cluster WBD Calibration Report archived at the CSA website in the Documentation section. Because the calibration was applied in the time domain using simple equations the raw counts actually measured by the WBD instrument can be obtained by using these equations and solving for 'Raw Counts', keeping in mind that this number is an Integer ranging from 0 to 255. Since DC offset is a real number, the resultant when solving for raw counts will need to be converted to the nearest whole number. A sample IDL routine for reverse calibrating to obtain 'Raw Counts' is provided in the WBD Calibration Report archived at the CSA. ... CONVERSION TO FREQUENCY DOMAIN: ... In order to convert the WBD data to the frequency domain via an FFT, the following steps need to be carried out: 1) If Electric Field, first divide calibrated data values by 1000 to get V/m; 2) Apply window of preference, if any (such as Hann, etc.); 3) Divide data values by sqrt(2) to get back to the rms domain; 4) perform FFT (see Bandwidth variable notes for non-continuous modes and/or the WBD User Guide archived at the CSA); 5) divide by the noise bandwidth, which is equal to the sampling frequency divided by the FFT size (see table below for appropriate sampling frequency); 6) multiply by the appropriate constant for the window used, if any. These steps are more fully explained in the WBD Calibration Report archived at the CSA.... +--------------------------+ Bandwidth Sample Rate ----------- -------------- 9.5 kHz 27.443 kHz 19 kHz 54.886 kHz 77 kHz 219.544 kHz +--------------------------+ COORDINATE SYSTEM USED: ... One axis measurements made in the Antenna Coordinate System, i.e., if electric field measurement, it will either be Ey or Ez, both of which are in the spin plane of the spacecraft, and if magnetic field measurement, it will either be Bx, along the spin axis, or By, in spin plane. The user of WBD data should refer to the WBD User Guide, archived at the CSA, Section 5.4.1 and Figure 5.3 for a description of the three orientation angles provided in these files. Since WBD measurements are made along one axis only, these three angles provide the only means for orienting the WBD measurements with respect to a geocentric coordinate system and to the magnetic field direction ...
Acknowledgement
Users of the Cluster WBD data are encouraged to acknowledge Jolene S. Pickett, PI and Donald A. Gurnett, Co-I University of Iowa and the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center, or the Cluster Science Archive, as appropriate, as the source of the data in any publication.
PublicationInfo
Authors
Pickett, Jolene, S.; Gurnett, Donald, A.
PublicationDate
2023-01-01 00:00:00
PublishedBy
Space Physics Data Facility; European Space Astronomy Centre
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigatorTechnicalContact
spase://SMWG/Person/Jolene.S.Pickett
2.
CoInvestigatorFormerPI
spase://SMWG/Person/Donald.A.Gurnett
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
Cluster WBD Instrument Page
URL
http://www-pw.physics.uiowa.edu/cluster/
Description
Cluster WBD Instrument page maintained by the University of Iowa with links to instrument descriptions and team members, publications, lists of coordinated observing times, science data availability catalogs, data, data interpretation and caveat descriptions as well as data analysis tools.
Language
en
InformationURL
Name
Cluster Science Archive Documentation Page
URL
https://www.cosmos.esa.int/web/csa/documentation
Description
Cluster WBD documentation with links to lists of coordinated observing times, science data availability catalogs, WBD User Guide, WBD Calibration Report, WBD Interface Control Document, and data interpretation and caveat descriptions.
Language
en
PriorIDs
spase://VWO/NumericalData/Cluster-Rumba/WBD/Cluster_1_Waveform_WBD
spase://VWO/NumericalData/Cluster-Rumba/WBD/PT0.0000046S
spase://VMO/NumericalData/Cluster-Rumba/WBD/PrimeParameter/PT0.02S
spase://VSPO/NumericalData/Cluster-Rumba/WBD/PT0.0000046S
spase://ESA/NumericalData/Cluster-Rumba/WBD/PT0.0000046S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/cluster/c1/wbd/
Description
FTP access to repository of Cluster 1 WBD CDFs at NASA
Language
en
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/cluster/c1/wbd/
Description
HTTP access to repository of Cluster 1 WBD CDFs at NASA
Language
en
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=C1_WAVEFORM_WBD&index=sp_phys
ProductKey
C1_WAVEFORM_WBD
Description
FTP access to repository of Cluster 1 WBD CDFs at NASA
Language
en
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/cluster/c1/wbd/$Y/$m
AccessFilenameTemplate
c1_waveform_wbd_$Y$m$d$H$M_$v.cdf
Acknowledgement
Users of the Cluster WBD data are encouraged to acknowledge Jolene S. Pickett, PI and Donald A. Gurnett, Co-I University of Iowa and the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center, as the source of the data in any publication.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/C1_WAVEFORM_WBD/clientLibraryExample/
Style
WebService
ProductKey
C1_WAVEFORM_WBD
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Users of the Cluster WBD data are encouraged to acknowledge Jolene S. Pickett, PI and Donald A. Gurnett, Co-I University of Iowa and the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center, as the source of the data in any publication.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
C1_WAVEFORM_WBD
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Users of the Cluster WBD data are encouraged to acknowledge Jolene S. Pickett, PI and Donald A. Gurnett, Co-I University of Iowa and the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center, as the source of the data in any publication.
AccessInformation
RepositoryID
spase://SMWG/Repository/CSA
Availability
Online
AccessRights
Restricted
AccessURL
Name
Access to Cluster WBD CEFs
URL
https://www.cosmos.esa.int/web/csa/
Description
Access to repository of Cluster 1 Wideband data in Cluster Exchange Format (CEF) and CDF format at the Cluster Science Archive. The CEF format files have the designation C[n]_CP_WBD_WAVEFORM, the CDF format has the designation C[n]_CE_WBD_WAVEFORM_CDF, where n=1,2,3,4.
Language
en
Format
Text.ASCII
Encoding
None
Acknowledgement
Users of the Cluster WBD data are encouraged to acknowledge Jolene S. Pickett, PI and Donald A. Gurnett, Co-I University of Iowa and the Cluster Science Archive, as appropriate, as the source of the data in any publication.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/Cluster-Rumba/WBD
MeasurementType
Waves.Passive
MeasurementType
ElectricField
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2001-02-03 05:26:00Z
StopDate
2016-06-30 19:30:00Z
Cadence
PT0.0000046S
SpectralRange
RadioFrequency
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.NearSurface.Plasmasphere
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.NearSurface.PolarCap
ObservedRegion
Earth.NearSurface.Ionosphere
ObservedRegion
Heliosphere.Inner
Caveats
See the Cluster WBD WBD data Interpretation Issues and Caveats documents at the web site http://www-pw.physics.uiowa.edu/cluster/ , and clicking on the links next to the "Caution" symbol in the listing on the left hand side of the page. The documents can also be retrieved from the Documentation section of the CSA.
Keywords
Time Series
Waveform
AKR
Auroral hiss
Auroral Kilometric Radiation
Chorus
Continuum radiation
Equatorial Noise
Kilometric Continuum radiation
Plasmaspheric Hiss
Terrestrial Kilometric Radiation
TKR
Very Long Baseline Interferometry
VLBI
Langmuir Waves
Type III Solar Bursts
Electostatic Solitary Waves
ESW
Whistlers
Ion Acoustic Waves
Bernstein Waves
Upper Hybrid Waves
Lower Hybrid Waves
Parameter #1
Name
UT Time
ParameterKey
Epoch
Description
UT Time, time of WBD data point. On-board time is corrected to a precision of order 50 microseconds when compared to UTC. The applied time correction comes from the DWP TCOR time correction files located at the Cluster Science Archive (CSA).
Units
picoseconds
Support
SupportQuantity
Temporal
Parameter #2
Name
Frequency Bandwidth
ParameterKey
Bandwidth
Description
Frequency Bandwidth: 9.5 kHz, 19 kHz, 77 kHz. WARNING: 19 and 77 kHz Bandwidth modes with 8-bit resolution, and 77 kHz Bandwidth mode with 4-bit resolution (see Resolution variable) are not continuous data modes. Always check for periodic time jumps for these modes.
Units
kHz
ValidMin
0.0
ValidMax
80.0
Support
SupportQuantity
Other
Parameter #3
Name
Frequency Shift
ParameterKey
Translation
Description
Base freq. of freq. bandwidth (0.0, 125.454, 250.908, and 501.816 kHz) - Also known as Conversion Frequency.
Units
kHz
ValidMin
0.0
ValidMax
510.0
Support
SupportQuantity
Other
Parameter #4
Name
Digital Resolution
ParameterKey
Resolution
Description
Number of bits used when digitizing waveform (8-bit, 4-bit, or 1- bit)
Units
bits
ValidMin
1
ValidMax
8
Support
SupportQuantity
Other
Parameter #5
Name
Antenna
ParameterKey
ANTENNA
Description
Antenna (0=Ez, 1=Bx, 2=By, 3=Ey)
Support
SupportQuantity
Other
Parameter #6
Name
Gain
ParameterKey
Gain
Description
Gain state of WBD instrument. Steps of 5 dB from 0 to 75.
Units
dB
ValidMin
-1
ValidMax
80
Support
SupportQuantity
Other
Parameter #7
Name
Antenna-B Field Total Angle
ParameterKey
Ant_B_Field_Angle
Description
Total angle between antenna used for WBD measurement and measured B field direction. Antenna refers to the antenna in use, either E or B. See ANTENNA variable.
Units
degrees
ValidMin
0.0
ValidMax
180.0
Support
SupportQuantity
Other
Parameter #8
Name
Antenna Xgse Angle
ParameterKey
Ant_Xgse_Angle
Description
Total angle between the Xgse axis and the antenna direction. Antenna refers to the antenna in use, either E or B. See ANTENNA variable.
Units
degrees
ValidMin
0.0
ValidMax
180.0
Support
SupportQuantity
Other
Parameter #9
Name
Antenna YZgse-Plane Angle
ParameterKey
Ant_YZgse_Plane_Angle
Description
Total angle between Ygse axis and the projection of the antenna direction in the Ygse-Zgse plane, measured counter-clockwise from +Ygse (angle=0 deg) to +Zgse (angle=90 deg), -Ygse (angle=180 deg) and -Zgse (angle=270 deg). Antenna refers to the antenna in use, either E or B. See ANTENNA variable.
Units
degrees
ValidMin
0.0
ValidMax
360.0
Support
SupportQuantity
Other
Parameter #10
Name
DC Offset
ParameterKey
DC_Offset
Description
DC Offset used when converting from raw digital values to calibrated data. DC Offset values may be used to reverse calibrate the data to the original raw counts and to determine the boundaries of the original transport packets.
Support
SupportQuantity
Temporal
Parameter #11
Name
WBD AC Electric Field
ParameterKey
WBD_Elec
Description
Calibrated AC WBD Electric Field
Units
mV m^-1
ValidMin
-50.0
ValidMax
50.0
Wave
WaveType
PlasmaWaves
WaveQuantity
ACElectricField
Parameter #12
Name
WBD AC Magnetic Field
ParameterKey
WBD_Mag
Description
Calibrated AC WBD Magnetic Field.
Units
nT
ValidMin
-10.0
ValidMax
10.0
Wave
WaveType
PlasmaWaves
WaveQuantity
ACMagneticField
Parameter #13
Name
Data Quality
ParameterKey
DATA_QUALITY
Description
Data Quality: 0 = OK, 1 = clipped or questionable, 2 = bad data point. Clipped data: Measurement was equal to raw data value maximum (255) or minimum (0). This does not necessarily mean the receiver was in saturation, which would be accompanied by non-linear effects.
Support
SupportQuantity
Other